Mangling machines



March 4, 1958 H. L. BYRD MANGLING MACHINES s Sheets-Shae}. 1

Filed March 1, 1955 H. I... BYRD MANGLING MACHINES March 4; 1958 3Sheets-Sheet 2 Filed March 1, 1955 March 4., 1958. H. 1.. BYRD 2,825,217

MANGLING MACHINES Filed March 1, 1955 v 5 Sheets-Sheet 5 o \\ioii o 1/?i F 'i i 1 n 2,825,211 Ice Patehted'Marf4, 1.95:8

2,825,217 MANGLING MACHINES Hugh L. Byrd, Blackburn, England, assignorto Sir James Farrner Norton -& Company Limited, Salford, England, aBritish company Application March 1, 1955, SerialNo. 491,363

comin or. 68256) This invention relates to mangling, rolling and likemachines having two or more bowls, or rollers, and has for its object toprovide improved means for applying pressure to the bowls which willgive a more uniform distribution of pressure along the bowls.

Accordi g to the invention, pressureis applied to at least one bowl orroller at each end by means acting on one end of a lever which isfulcrumed on the main bearing of the. bowl or roller and has its otherpivotally attached to asubsidiary bearing located near the end of thebowl or rolleroutside the main hearing.

The pressure so applied tends to lift the extremities of the bowl fromthe adjacent bowl and force its centre part towards the adjacent bowl sothat the distribution of pressure along the bowl is more unif rm thanwhen just the main bearings are loaded, so much so that the deflectionof the rollers can be very considerably reduced. As a result, asufficiently uniform pressure can be obtained with thinner bowls thanhitherto, which is advantageous because thinner bowls are more effectivein squeezing moisture out of cloth. A uniform distribution of pressurealong the bowl is very necessary in the dyeing of cloth for enablinglevel dyeing to be obtained.

If desired, similar arrangements may be provided to apply pressure ateach end of both the top and bottom bowls of a three-bowl machine, inwhich case the middle bowl may be fixed. Alternatively, the leversacting on either the top or the bottom bowl may be pivotally attached attheir inner ends to fixed points instead of to pressureapplying means,pressure being applied only to the other bowl, in which case the sameresult is obtained, with pressure applied through the middle bowl whichis movable. The pressure applying means may be hydraulic or pneumaticcylinders with pistons having piston rods connected to the ends of thelevers. Alternatively, the pressure may be applied by mechanical means,for example by means loaded by screw devices or by weights. The bowlbearings are mounted in the normal manner in vertical, horizontal orinclined guides, thus locating the bowls or rollers and preventinglateral movement.

The invention could also be applied to cloth calendering machines orrolling machines for sheet and strip metal. In the case of machines fordealing with cloth at least one of the bowls has a surface of resilientmaterial such as rubber.

Referring to the accompanying drawings,

Figure 1 is a front elevational view of a three-bowl cloth manglingmachine embodying the present invention.

Figure 2 is a front elevational view of a modified form of a three-bowlcloth mangling machine, and

Figure 3 is a part front elevational view of the machine shown in Figure2.

The machine shown in Figure 1 has a top bowl 1, a rubber middle bowl 2,and a bottom bowl 3. The bowls are geared together by gears 4, 5 and 6at each end, and the bottom bowl 3 is driven by a chain wheel 7. Thebcwls run in bearings 8. 9, 10 at each end. which are mounted betweenvertical guides 11. Beneath each ..ples on the ends ofthe bottom bowl 3as indicated by end of the bottom bowl 3 is a lever 12, having one endattached to a bracket 13 fixed to the machine frame, and its other endattached to a bracket 14 on a bearing 15 'onthe'end ofthe, bowl 3 beyondthe main bearing 10, the lever-being: fulcrum'ed at 16 on the bearing10.

Above each end ofthev top bowl 1 there is a lever 17, having itsouterend attached to. a bracket 18'on .a bearing-19 on the outer. end ofthe bowl 1, its fulcrum-2t). on

'the main bearing 18 and-its inner. end attached to. the mov- O ingpart21 of a hydraulic jack 22 mounted on'themachine frame. Hydraulicfluid can be applied to or exhausted fromeit-her end of the jacks '22,by wayof a h'and operated valve 23.

,If fluid isadmitted-at the tops ofthejacks 22 so as to force theinnerends of the levers 17 downwards, the mainb'earing :8 eispressed.downwards and the outer end of the bowlfl is pulled upwards, asindicated by arrows.

.Thishas 'the-resultothat the bowl 1 tends to become.curved,sothatthe-pressure between it and the middle 20.

.creased, thus compensating. forany tendency of the bowl bowl 2 at thecentre of 'the machine tends to become into curve. in. the opposite:direction while cloth ispassing between the"bowls-1..and 2. At the sametime the main bearingsS, 19 .andli) are all depressed, so that thelevers v12, being anchored .to the brackets 13, exert couarrows, tendingto bend said bowl so as to increase the pressure-between. it vandthebowl ,2 ,at the centre of the machine.

It will be understood that the. bowls,1,,2 and 3 are made of metal or ofmetal covered with resilient material such as rubber, and the same arelong compared with their diameters. The small deflection at themid-point of a bowl will require only a very slight deflection at theends of the bowl where the gears 4, 5 and 6 are located and only a veryslight angular deflection at the bearings 8 and 10, insuflicient tointerfere with the meshing of the gears or to cause the bowls to bind intheir bearings. The bearings 15 and 19 move with the ends of the bowlsand remain coaxial therewith.

Figure 2 shows a modification of the machine of Figure 1, in which thelevers 12, instead of being attached to fixed brackets 13, are actedupon at their inner ends by hydraulic jacks 24 which are operatedsimultaneously with the jacks 22 acting upon the upper levers 17. Bythis means, pressure is applied directly to both the top and bottombowls.

Figure 3 shows a further modification, in which pressure is applied tothe levers l2 and 17 by mechanical means instead of hydraulic jacks. Thelevers 12 and 17 have their ends pivotally secured to stirrups 25 actedupon by screws 26 threaded into nuts 27 attached to the machine frame 28and provided with hand wheels.

What I claim is:

1. A mangling, rolling or like machine, having at least two bowls orrollers located one above another, asingle main bearing for each bowl inproximity to each end of each bowl, subsidiary bearings for at least onebowl located near each end of said bowl outside the main bearingthereof, levers pivotally attached to said subsidiary bearings andfulcrumed on the adjacent main bearings of said bowl, and means actingon the ends of said levers remote from the subsidiary bearings forapplying pressure thereto to force the ends of the bowls apart with thesubsidiary bearings moving with the ends of the bow and remainingcoaxial therewith.

2. A mangling, rolling or like machine, having at least two bowls orrollers located one above another, main bearings for each bowl,subsidiary bearings for each of the top and bottom bowls located nearthe ends of said bowls, outside the main bearings thereof, leverspivotally attached to said subsidiary bearings and fulcrumed on theadiacent main bearings of each bowl, and means acting on the ends ofsaid levers remote from the subsidiary bearof the top andlbottom bowlslocated nearthe: ends of 6 said bowls outside the main bearings thereof,levers pivotally attached to said subsidiary bearings and fulcrumed onthe adjacent main bearings of each :bowl, and means acting on ,the endsof the levers associated with one of said top and bottom bowls remotefrom the subsidiary bearings for applying pressure thereto. to force theends of said top and bottom rollers apart,1the ends remote from thesubsidiary bearings of the levers associated with the other of said topand bottom rollers being pivotally attached to fixedpointsinside'themain bearings.

4. A mangling, rolling or like machine, having a top bowl or roller, abottom bowl or roller. main bearings'for the bowls, guides in which themain bearings are movably mounted, subsidiary bearings located near theends of the top and bottom bowls outside the main bearings, leverspivotally attached to the subsidiary bearings of the top bowl, andfulcrumed on the main bearings thereof, pressure applying means actingon the inner ends of said levers, and levers pivotally attached to thesubsidiary bearings of the bottom bowl and fulcrumed on the mainbearings thereof and attached at their inner ends to fixed points insidethe main bearings.

5. A mangling, rolling or like machine. having at least two bowls orrollers one above another, a single main bearing for each bowl inproximity to each end of each bowl, subsidiary bearings for at least onebowl located near each end of said bowl outside the main bearingthereof, levers pivotally attached to said subsidiary bearings andfulcrumed on the adjacent main bearings of said bowl, and means actuatedby fluid pressure acting on the ends of said levers remote from thesubsidiary bearings for applying pressure thereto to force the ends ofthe bowls apart with the subsidiary'bearings moving with the ends of thebowl and remaining coaxial therewith.

6. A mangling, rolling or like machine comprising a pair of spaced apartvertical guides, at least two bowls positioned one above the otherextending substantially perpendicularly relative to the vertical guides,a main bearing mounted on each vertical guide in which eachbowl isjournalled, the bowls being unobstructively bridging between saidvertical guides and with the endsof each bowl projecting beyond the mainbearing, a subsidiary hearing for each end of each bowl locatedexteriorly of each main bearing, a lever pivotally connected to eachsubsidiary bearing and fulcrumed on the adjacent main bearing, and meansoperatively connected to the end of eachlever remote from the pivotalconnection to the subsidiary bearing serving to apply pressure theretotoforce'the ends of the bowls apart, with the subsidiary bearings movingwith the ends of the :bowl and remaining coaxial therewith.

References Cited in the file of this patent UNITED STATES PATENTS134,310v Pratt Dec. 24, 1872 536,145 Howard Mar. 19. 1895 2,185,481Ungerer Jan. 2, 1940 2,204,413 Hubbert June 11,1940

